EXTRA English 22 Haunting at Halloween Grammatik und Übungen Must/ mustn’t, have to/ don’t have to We use must/mustn't to indicate the law or a strong obligation. You must drive on the left. You must pass an examination to enter the college. You mustn't smoke in class. You mustn't turn left at the lights. Must and have to have more or less the same meaning. You have to beware of black hair and the number three. You have to drive on the left. However, mustn't and don't have to are different. Don’t have to indicates that something isn't necessary. I don't have to pass an examination to enter the college. A. Complete these sentences with must / mustn't or have (has) to / don't (doesn't) have to. don’t have to _________ pay for tickets, the concert is free. 1. We __ 2. I _ _must_________ go and get some petrol. 3. My English cousin __doesn’t have to____ do military service – it isn't compulsory there. 4. We ___have to____ get to school early tomorrow, the exam starts at 8 am. 5. You _ mustn’t _____ drive so fast – you're breaking the speed limit! 6. You __mustn’t___ use a dictionary during the exam – it's against the rules! Should / shouldn’t We use should to give advice or make a suggestion. Bernard, I really don't think that you should be on the roof. You shouldn't smoke. She should see the new James Bond film – it’s great! A. Complete these sentences using should or shouldn’t. 1. That's a very bad cough, you ______really should see a doctor__________________ . 2. It's raining, you __________shouldn’t walk ____________________ in the street. 3. 20 cigarettes a day? You __________should cut down on your smoking___________ . © 4Learning / Schulfernsehen multimedial 2007 1 EXTRA English 22 Haunting at Halloween Grammatik und Übungen 4. You __________shouldn’t__________________ make fun of Bernard, he's very upset. 5. Bernard ___shouldn’t _ allow his cat to walk around the building – she gets lost easily. Should have We use should have and shouldn't have to give advice or make a suggestion about an action in the past. He’s the man. He should’ve gone. (= But he didn’t go.) She shouldn’t have gone. (But she did go.) A. Complete these sentences with a past suggestion using the verb in brackets. 1. Nick was very nervous. Hector ___shouldn’t have told _________ (tell) the ghost story. 2. You ate all the chocolates! You ___should’ve given ____________ (give) some to me! 3. You were very rude to the traffic warden. You __ shouldn’t have done_ ____ (do) that! 4. They were late for the concert. They ____should’ve caught ____ (catch) an earlier train. 5. Why did you drive past that girl? We ___should’ve given ____ (give) her a lift in our car. © 4Learning / Schulfernsehen multimedial 2007 2